William wattib



UNITED ASTATES PATENT OFFICE. f

WILLIAM WATTIE, OF WORCESTER, MASSACHUSETTS, ASSIGN OR TO THE KNOVVLES LOOM WORKS, SAME PLACE.

LOOM.

SPECIFICATION forming part of Letters Patent No. 392,383, dated November 6, 1888.

Application filed March 9, 1888. Serial-No. 266,683. (No model.)

T all whom, t may concern:

Be it known that I, WILLIAM WATTIE, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Looms; and I do hereby declare that the following is a full, clear, and exact description thereof,which, in connection with the drawings, making a part of this specification, will enable others skilled in the art to which myinvention belongs to make and use the same.

My invention relates to looms, and more particularly to the mechanism for operating' the harness or dropboxes in looms; and the object of my invention is to provide a safety device which will give Way and break the connection between the power and the harness or box motion when either of them meets with an obstruction to their proper working, and which will at the same time automatically stop the loom without interfering with the weft or other stop motions that may be used.

Referring to the drawings, Figure 1 is a side elevation of a portion of aloom with my safety mechanism applied thereto. Fig. 2 is an elevation of -some of the parts shown in Fig. 1, looking in the direction of the arrow, same figure; and Fig. 3 is a detail view, on -an enf larged scale, of' a detached portion of the safety device.

In the accompanying drawings, 1 represents the loom-side; 2, the arch-stand; 3, they arch;

4, the harness and box motion frame; 5, the crank-shaft end, and 6 the lay. Power is communicated to the harness and box mech- .anism from the crank-shaft through spurgears 7, bevel-gears 8 and 8', clutch 12 14, shaft 9, bevel-gears 10, nand cylinders 11, all in the usual manner, and as set forth in Patent No. 134,992, of January 2l, 1873.

The upper part, 12, of thc clutch, Figs. 1 and 3, has secured to it the downwardly-projecting clutch-pin 1-3, which passes loosely through the collar 14, fastened to the shaft 9. As usually constructed, the clutch-pin 13 enters a straight hole or socket in the upper side of the bevel-gear 8 a sufficient distance to hold and drive the shaft 9, the gear 8 running loosely on the shaft; but in the present construction the end of the clutch-pin 13 is bevcaught.

eled and enters a corresponding]y-beveled socket in the upper side of the gear 8, into which it is held by a spring, 15, coiled on the shaft 9 with sufficient force to drive the head motion when operating in a proper manner. The force of the spring 15, adjustable by collar 16, and the angle of the bevel on the end of the clutch-pin 13, are so proportioned that when resistance to the turning of the shaft 9 becomes too great the end of the pin 13 slips out of its socket, thus relieving said shaft.

It sometimes happens that the harness-pattern chain 17 gets caught in turning on the chain-spool18,which is driven by gearing 41', Fig. 1, from the lower cylinder, 11, thus bringing the giveway-spring 15 into action. It also sometimes happens that the shuttle-box gets caught, preventingits being lifted by the boxmotion levers 19, Fig. 2. In the loom shown in the drawings the box-motion levers 19 are operated from the same cylindenshafts 11 as lthe harness-motion, connection being made between the levers 19 and the box by the cord or chain 20, passing over pulleys and attached to the lifter-sleeve 21, so that when the boxis stuck it also may be relieved by spring 15 letting the clutch-pin 13 slip out ofits socket.

Provision is usually made for the box get-` ting caught by placing a spring on the lifterrod 22, Fig. 1, between the sleeve 21 and the box, on which spring the box rests, and which is strong enough to lift the box steadily, but which will give and allow the sleeve to rise without lifting the box when the latter gets On looms fitted with six or more cells in the shuttle-boxes it has been found exceedingly difficult to get in a spring of the length admissible that would be strong enough to lift the necessarily somewhat heavy box' and still be capable of being closed a distance equal to the greatest travel of the box-the require Inent for perfect safety.

By my invention I do away entirely with Vthe employmentof a spring on the lifter-rod 22, as above described, and it will be seen that the spring 15 will act with equal effectiveness and facility, no matter v about the number of cells or travel of the box. l

For the purpose of picking out imperfect work, mending broken warp-threads, die., it is sometimes desirable to turn the head-motion.

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without turning the rest of the loom. In order to do this the clutch member 12 has been fitted to be disconnected by a lifting-fork in the groove of the clutch member pivoted near the shaft 9 and connected by a link direct to hand` lever 23, In the present instance a lever, 24, is pivoted near its center on the arm 24el on the arch-stand 2 and carries at one end a pin, which engages the groove in clutch member 12, and near the other end a cam, 25, in this instance fastened adjustably to the lever by a bolt, 26. The cam 2.5 is adapted to be engaged by the end 27 of the hand-lever 23 when the top part of hand-lever is thrown forward in such a manner as to lift the clutch 12 against the pressure of the spring l5. The end of the lever 24 projects beyond the cam 25 and terminates in a lug, 24, turned outward at right angles to the plane ofthe lever 24, and which enters a slot, 28, in the top end of link 29, which is pivoted at its lower end to the weighted end 30 of' a lever, 30, pivoted to the loom-side at 3l. Iivoted to the other end of the lever' 30 is a link, 32, which has aslot. 32', in its upper end, which engages a pin, 33, in the lockingarm 3l, pivoted to the loom-side 1 at 35.

The shipper-shaft 36 extends the length of the loom, supported in hearings on the loomsides. On one end of said shaft 36 is the shipper-handle 37, by which said shaft is rotated, l in order to operate the belt-shifting or frictioni elutch-coupling devices for stopping and starting the loom, which devices, arranged in any g ol' the common and well-known ways, are attaehed to the opposite end of the shipper-shaft (not shown) in such a manner that when the handle 37 is pulled forward the power is applied, and when the handle is thrown back intothe position shown in Fig. 1 the power is disconnected.

rlhe spring 3S, coiled on the shippershaft, has one end fast in the loonrside and the other fast in the collar 39, by which the spring is tightened in coil, so as to throw the power off and the shipper 37 into position shown in Fig. 1, when the action of the spring is unobstructed. The shipper 37 is held with power' on by the point 40 of the locking-arm 34 drop ping by its own weight or by the action of a Spring upon the pin 41, thus locking it.

When the head-driving shaft 9 meets an obstruction in the harness or box motions, the clutch-pin 13 lifts out o1' its soeket,and through lever 24, link 29, lever 30, and link 32 lifts the catch-point 4,0 off the pin 4l in the shipper-handle 37, and the spring 3S on the shipper-shaft 3G throws oil' the power and stops the loom. In Fig. l these parts are shown in the position they occupy just after that operation has taken place. If there are weft or other stop-motions on the loom, they are arranged to knock off and stop the loom by throwing out the catch-point 40. The end of the link 32 is slotted to allow the pin 33 to rise with the locking-arm 34 without disturbing the clutch 12 and connections when the clutch is in gear.

In some forms of looms the brake used for effecting a quick stop is so connected that it requires a movement-generally stepping on a treadle-additional to that of throwing on a shipper to set the brake, and in such ease the shipper-shaft is jointed, so that the loom can be stopped by throwing the shipper by hand without disturbing the brake-setting, and the catch 40 is only thrown out by the operation of the stop-motions, in which case it is desirable to disconnect the clutch 12 by means of the hand-lever 23 without throwing out the catch 40. In order to accomplish this the link 29 is inclined, so that when the pin 27, operated by hand-lever 23, is moved toward the cam 25, the link swings back of its own weight, letting the lng 21 on end ofthe lever 24 into the long part of the slot 28, so that the ca1n-lever may be depressed and the clutch member 12 lifted by the further action of pin 27 on cam 25 without moving the connections 31 32 and catch 40. The end 30 of leverB() is weighted, so that when it and its connections are unconfined the link 29 will always rest with the top face of slot 28 on lug 24J of lever 211, so that the slot may always be in line to be pushed into the position shown in Fig. 1 by action ofthe pin 27 of handdcver 23.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom, the shippershaft, shipperhandle fast on said shaft and provided with a pin adapted to be engaged by a locking-arm, 34, and said loekingarm 311 provided with a pin, 33, the link 32, lever 30, link 29, and lever 24, in combination with a spring-confined giveway intervening between the harness or box motions and the sonreeof power foroper ating them, for the purpose stated, and the harness or box motions and means for operating the same, substantially as shown and described.

2. Ina loom, the spring-conlined giveway intervening between the harness or box motions and the source of power for operating them, and said harness or box motion, and means for operating the same, the lever 24, hand-lever 23, inclined link 29, provided with a slot in its upper end, lever 39, pivoted near its center to the loom-side, link 32, provided with a slot in its upper end, and the lockingarm 3i, provided with a pin, 33, in combination with a shipper-handle provided with a pin, 41, adapted to be engaged by said locking-arm and fast to the shipper-shaft of the loom, and said shipper-shaft, substantially as shown and described.

WILLIAM XVATTIE.

Witnesses:

JOHN C. DEWEY, CLARENCE SOHOFIELD.

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